diff --git a/fabric-ibc-lightclientd/go.mod b/fabric-ibc-lightclientd/go.mod
index 91375c9..f27b721 100644
--- a/fabric-ibc-lightclientd/go.mod
+++ b/fabric-ibc-lightclientd/go.mod
@@ -109,7 +109,7 @@ require (
 	go.uber.org/zap v1.14.1 // indirect
 	golang.org/x/crypto v0.0.0-20201221181555-eec23a3978ad // indirect
 	golang.org/x/net v0.0.0-20201021035429-f5854403a974 // indirect
-	golang.org/x/sys v0.0.0-20210309074719-68d13333faf2 // indirect
+	golang.org/x/sys v0.1.0 // indirect
 	golang.org/x/term v0.0.0-20201117132131-f5c789dd3221 // indirect
 	golang.org/x/text v0.3.3 // indirect
 	google.golang.org/genproto v0.0.0-20210114201628-6edceaf6022f // indirect
diff --git a/fabric-ibc-lightclientd/go.sum b/fabric-ibc-lightclientd/go.sum
index 6faaad2..3cca95f 100644
--- a/fabric-ibc-lightclientd/go.sum
+++ b/fabric-ibc-lightclientd/go.sum
@@ -1067,8 +1067,9 @@ golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20201015000850-e3ed0017c211/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210119212857-b64e53b001e4/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20210309074719-68d13333faf2 h1:46ULzRKLh1CwgRq2dC5SlBzEqqNCi8rreOZnNrbqcIY=
 golang.org/x/sys v0.0.0-20210309074719-68d13333faf2/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.1.0 h1:kunALQeHf1/185U1i0GOB/fy1IPRDDpuoOOqRReG57U=
+golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201117132131-f5c789dd3221 h1:/ZHdbVpdR/jk3g30/d4yUL0JU9kksj8+F/bnQUVLGDM=
 golang.org/x/term v0.0.0-20201117132131-f5c789dd3221/go.mod h1:Nr5EML6q2oocZ2LXRh80K7BxOlk5/8JxuGnuhpl+muw=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=